Top Three Topics:
1) How does helium make your voice high pitched?
Here are some websites that you can learn more about helium:
-http://en.wikipedia.org/wiki/Helium
-http://answers.yahoo.com/question/index?qid=20090202151703AAhPpUB
2)How does plants create photosynthesis?
Plants use the sunlight to make carbon dioxide into oxygen.
Here are some websites that tell you more about it:
Here are some websites that tell you more about it:
- http://library.thinkquest.org/3715/photo3.html
-http://en.wikipedia.org/wiki/Photosynthesis
3)Why does fire and clouds have shadows when they are made of gas?
-Anything that blocks sunlight will have a shadow. Even though fire and clouds are made of gas they still block sunlight so therefore they have shadows. You don't usually see a cloud's shadow on a cloudy day but you probably notice when a cloud covers the sun everything gets darker.
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